dog.java

用来学习java 的文档

public class Dog {
	static int furColor;//成员变量可以不赋值，默认是0
	static float height;
	float weight;
	static byte  furColor1;
	static short  furColor2;
	static char furColor3;
	static long  furColor4;
	static double furColor5;
	static boolean furColor6;
	
	void catchMouse(Mouse m) {
		//as;dfj;asdf
		//asdfj;asf
		//m.scream();
	}
	
	public static void main(String[] args) {
		//int i;局部变量必须赋值
		System.out.println(furColor+"		int类型默认是0");
		System.out.println(height+"		float类型默认是0.0");
	    System.out.println(furColor1+"		byte类型默认是0");
		System.out.println(furColor2+"		short类型默认是0");
		System.out.println(furColor3+"		char类型默认是口");
		System.out.println(furColor4+"		long类型默认是0");
		System.out.println(furColor5+"		double类型默认是0.0");
		System.out.println(furColor6+"		boolean类型默认是false");
		
		
		Dog d = new Dog();
		Mouse m = new Mouse();
		d.catchMouse(m);
		HelloWorld hw = new HelloWorld();
	}
}

class Mouse {
	int height;
}
class HelloWorld
{}